<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8" />
		<title>1.表达式与语句</title>
	</head>
	<body>
		<script type="text/javascript" >
			let x1 = 1
			let x2 = 1+1
			let x3 = demo()
			let x4 = floor > 6 ? '高' : '低'
			//.....

			// 语句（代码）
			if(1===1){}
			try {
				
			} catch (error) {
				
			}


		</script>
	</body>
</html>